How Many Sensors Are Actually Watching Your Building? Nearly 2 Billion, Worldwide

Walk through an office, a retail unit, or an apartment block today and you're almost certainly standing near building sensors you've never noticed. Temperature sensors, occupancy counters, air quality monitors, energy meters, running quietly in the background of everyday working life, in far more buildings than most people realise.

If you manage, own, or work in one of those buildings, here's the question that actually matters: are you using any of that data, or is it just running unseen?

Research from Memoori puts the installed base of IoT devices in commercial buildings at just under 2 billion by the end of 2024, up from 1.55 billion in 2022. Memoori forecasts this will reach approximately 4.12 billion by 2030, a compound annual growth rate of just over 13%. The number of building sensors already running around us is set to more than double within five years.

Each of these building sensors does something specific. Occupancy sensors count how many people are in a room or building at any given time. Air quality sensors track carbon dioxide, particulate matter and humidity. Energy sensors measure how much power lighting, heating and cooling systems are actually using, rather than how much they were designed to use. On their own, each reading is a small data point. Together, across an entire building, they build a detailed, continuously updated picture of how a space really behaves, hour by hour.

For property professionals, the problem usually isn't a lack of building sensors. Plenty of buildings already have some installed. It's that the data sits siloed, unmonitored, or simply unused: Memoori's own research finds that more than 90% of sensor-generated data in commercial buildings goes unexploited, largely due to fragmentation between IT and building operations teams. This scale of adoption is what makes it possible to move away from fixed assumptions about how a building is used, and toward decisions based on what is actually happening inside it: adjusting a heating schedule, identifying underused space, or catching an air quality issue before it affects the people using the building.

Aireavu installs and manages this kind of building sensor network for commercial buildings, turning that stream of data into something a facilities team can actually act on day to day.

Want to see what that looks like for your building? Book a demo with the Aireavu team.

 Sources Memoori - Trends Powering the Smart Building Market to 4Bn IoT Devices by 2030 (primary source, verified): https://memoori.com/trends-powering-smart-buildings-4bn-iot-devices-2030/